New sockets existing ring

[KNIPEX]

Hi all, ive been asked to add 2 extra socket to the ringmain in an office, the office is on a 32a mcb.

all cabling is surface so will i need an rcd/rcbo

if it was a new circuit i agree i would then need one, but do i need one for just adding sockets of existing circuit??

if yes this is going to push the cost up sky high and i will proberly then loose the job

 

[Deleted member 9648]

Although 7671 requires that all sockets rated at 32a or less must be RCD protected the get out clause is the line 'unless for use of skilled persons or persons under supervision.
If the sockets are to be used for specific equipment rather than general use and that equipment is supervised by say the IT manager.....in my opinion there is no need to RCD them. I also consider that in an office environment it is undesirable to RCD them as nuisance tripping can cause significant problems and disruption.
The sockets you install should be labelled as not RCD protected and not for general use

If the installation method that YOU use is surface trunking (regardless of the rest of the circuit)then RCD protection for the wiring will not be required,if you conceal cables at a depth of less than 50mm and not enclosed in earth metallic conduit etc then RCD protection will be required and this would probably mean in practice RCD-ing the whole circuit..

 

[ICE]

I will go with Jud